Janson (surname)
Janson is a surname, and may refer to:
- Agnes Janson, Swedish mezzo-soprano singer
- Aleksander Janson, Estonian politician
- Alfred Janson, Norwegian pianist and composer
- Andrew Janson, South African rugby union footballer
- Anton Janson, Dutch printer and typographer after whom the font "Janson" is named
- Astrid Janson, Canadian set and costume designe
- August Janson, Estonian politician
- Bengan Janson, Swedish accordionist
- Beth Janson, Canadian film industry executive
- Cassidy Janson, British actress
- Charles Auguste Marie Joseph, Comte de Forbin-Janson, French Bishop of Nancy and Toul, and founder of the Association of the Holy Childhood
- Chris Janson, American country music singer and songwriter
- Ciara Janson, English actress
- David Janson, English actor and theatre director, father of Ciara Janson
- Dora Jane Janson, American art historian, collaborator of her husband H. W. Janson
- Edward Mason Janson, British entomologist in Nicaragua, son of Edward Wesley Janson
- Edward Wesley Janson, English entomologist
- Ernest A. Janson, United States Marine
- Gunnar Janson, Norwegian sculptor
- Herman Didrich Janson, Norwegian shipper and businessman
- Henrik Janson, Swedish musician and record producer
- Horst Janson (actor), German film and television actor
- H. W. Janson, American art historian
- Jamie Janson, British aid worker
- Jean-Baptiste Janson, French cellist and composer
- Johannes Ludwig Janson, German veterinary scientist
- Jonathan Janson (painter), American painter and art historian
- Jonathan Janson (sailor), British competitive sailor
- Josephine Janson, Swedish golfer
- Karin Stahre-Janson, Swedish cruise ship captain
- Klaus Janson, American comic book artist
- Kristofer Janson, Norwegian poet, author and Unitarian clergyman
- Lacy Janson, American track and field athlete
- Len Janson, American animated film director and writer
- Lucas Janson, Argentine footballer
- Marc Janson, Belgian-French painter
- Marie Janson, Belgian politician, sister of Paul-Émile Janson
- Mette Janson, Norwegian journalist
- Mihkel Janson, Estonian politician
- Nikolai Janson, Estonian revolutionary and Soviet politician
- Nils Janson, Swedish jazz trumpeter
- Oliver Erichson Janson, English entomologist, son of Edward Wesley Janson
- Oscar Janson, Swedish pole vaulter
- Paul Janson, Belgian politician, father of Paul-Émile Janson and Marie Janson
- Paul-Émile Janson, Belgian politician, brother of Marie Janson
- Pauline Janson, British rower
- Peter Janson, Australian motor racing driver
- Robert Janson, Polish composer, singer and guitarist
- Roland Janson, Swedish actor
- Selmar Janson, German-American pianist and teacher
- Svante Janson, Swedish mathematician
- Tore Janson, Swedish linguist
- Toussaint de Forbin-Janson, French cardinal
- Uwe Janson, German screenwriter, director and producer
- Victor Janson, German actor and film director